Question

why do some materials lose their Shine​

Answer 1

Some metals often lose their shine and appear dull, because of the action of air and moisture on them. Some metals as a result of oxidation with the atmospheric oxygen form oxides and by which their appearance becomes dull.

hope it will help u

Answer 2

✤it's because they are exposed to water an other atmospheric gases.

✤due to this they react with them and loose their shine.

✤corrission is also one such factor which makes the materials to loose their shine

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